CN115195346B

CN115195346B - A wheel set for a variable gauge bogie

Info

Publication number: CN115195346B
Application number: CN202211046502.9A
Authority: CN
Inventors: 闫科超; 徐艳晖; 刘志强; 王培斌; 姚银; 李华; 李前
Original assignee: CRRC Datong Co Ltd
Current assignee: CRRC Datong Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2025-04-01
Anticipated expiration: 2042-08-30
Also published as: CN115195346A

Abstract

The present invention provides a wheel set for a variable gauge bogie, which relates to the technical field of locomotive production and manufacturing. The wheel set for a variable gauge bogie comprises: an axle box beam, the inner wall of which is provided with a plurality of locking cone grooves arranged along the axial direction of the axle; an axle box front cover, which is arranged outside the axle end of the axle and connected to the axle box beam; an axle box body, which is arranged in the axle box beam, the outer wall of which is provided with a locking cone, one of the sides of the axle box body and the axle box front cover close to each other is provided with a limited retaining edge, and the other is provided with a limited portion, and the limited retaining edge is used for limiting the position of the limited portion; a sliding mechanism, which is respectively provided in the axle box body and the wheel; wherein the sliding mechanism is configured to drive the wheel and the axle box body to move along the axial direction of the axle, so that the locking cone is selectively engaged with one of the locking cone grooves, so as to switch between the unlocking mode and the locking mode, and is used for the wheel to change the gauge. The wheel set for a variable gauge bogie has good load-bearing effect and good reliability.

Description

Wheel set for bogie with variable track gauge

Technical Field

The present invention relates generally to the field of locomotive manufacturing technology, and more particularly to a wheel set for a variable gauge bogie.

Background

Because different railway track gauge systems are adopted in countries of the world, for example, railways in China are standard rails, track gauge is 1435mm, railways in Russian and most eastern European and Central Asian countries are wide rails, and track gauge is 1520mm. In the process of transnational intermodal transportation, when domestic passenger and freight railway vehicles run from a standard rail line to a wide rail line, the passenger and freight railway vehicles cannot directly pass through the standard rail line, and the bogies meeting different rail gauge requirements are required to be parked and replaced.

The existing traditional locomotive wheel pair or motor train unit power wheel pair is formed by assembling wheels and axles together through interference fit, so that the inner side distance of the wheel pair is kept unchanged, and the running requirement of one track gauge can be met. When the vehicle passes through different track gauge lines, the vehicle can continue to operate after the vehicle is stopped and returned to a warehouse to replace the bogie adapting to the new track gauge, and the vehicle has the problems of increased cost of manpower and material resources, long time consumption, low operation efficiency and the like.

The existing technology of the variable-track wheel set at home and abroad can only be suitable for motor train units or passenger locomotives with smaller axle weights and traction forces, and the structure of the variable-track mechanism can be designed to be smaller and smaller so as to reduce the difficulty of space arrangement, but the high-power and large-axle-weight locomotives can not meet the strength requirement due to very large loads in all directions.

Disclosure of Invention

The bogie wheel set for the variable track gauge has the advantages of good bearing effect and good reliability.

According to a first aspect of the present invention there is provided a truck wheel set for a variable gauge truck comprising an axle, a wheel and an axle housing assembly, said axle being threaded through said wheel and said axle housing assembly, said axle housing assembly comprising:

The inner wall of the axle box beam is provided with a plurality of locking cone grooves arranged along the axial direction of the axle;

The axle box front cover is arranged outside the axle end of the axle and connected with the axle box beam;

The axle box body is arranged in the axle box beam, a locking frustum is arranged on the outer wall of the axle box body, one of the sides, close to each other, of the axle box body and the axle box front cover is provided with a limiting flange, the other side is provided with a limiting part, and the limiting flange is used for limiting the limiting part;

The sliding mechanism is respectively penetrated through the axle box body and the wheels;

The sliding mechanism is configured to drive the wheels and the axle box body to move along the axial direction of the axle, so that the locking taper table is selectively clamped in one of the locking taper grooves, and therefore unlocking mode and locking mode switching is achieved, and the locking taper table is used for changing track gauges of the wheels.

In some of these embodiments, further comprising:

The limiting bearing is sleeved outside the shaft end of the axle and is arranged between the axle and the front cover of the axle box;

the axle end gland is arranged at the end part of the axle, and the axle end gland and the axle box front cover are respectively abutted to the two ends of the limiting bearing along the axial direction of the axle.

In some embodiments, a bearing mounting seat is disposed in the axle box front cover, the bearing mounting seat is in a slotted hole structure, the bearing mounting seat is used for mounting the limit bearing, and the limit bearing is configured to move in the bearing mounting seat along the radial direction of the axle.

In some embodiments, the inner wall of the bearing mounting seat is provided with a vertical flange, and the vertical flange is abutted to the outer ring of the limit bearing and used for limiting the limit bearing.

In some of these embodiments, the slip mechanism comprises:

The sliding sleeve is respectively penetrated through the axle box body and the wheels;

The spline hub is arranged in the sliding sleeve, and is sleeved outside the axle and connected with the axle;

the spline is arranged on the spline hub and between the spline hub and the sliding sleeve.

In some embodiments, the end face of the spline hub is used for limiting the sliding sleeve, or the end face of the spline is used for limiting the sliding sleeve.

In some of these embodiments, further comprising:

the axle box bearing is sleeved outside the sliding sleeve and is arranged between the sliding sleeve and the axle box body;

the bearing gland is arranged at one end of the sliding sleeve, which is close to the front cover of the axle box, and can be abutted to the axle box bearing for limiting the axle box bearing.

In some of these embodiments, the slip mechanism comprises a needle assembly comprising:

The rolling pin retainer is arranged between the axle and the sliding sleeve;

The needle roller body is arranged on the needle roller retainer and between the needle roller retainer and the sliding sleeve;

the limiting seat is sleeved outside the axle and arranged between the axle and the needle roller retainer.

In some of these embodiments, further comprising:

the driven gear is sleeved on the axle and positioned between the two wheels which are opposite to each other;

The driving mechanism comprises an axle suspension box and a driving source, wherein the axle suspension box is sleeved on the axle, the driving source is arranged on the axle suspension box, a driving gear is arranged at the output end of the driving source, and the driving gear is meshed with the driven gear.

In some embodiments, the axle box beam is provided with an axle hole, and the locking taper groove is arranged on the inner wall of the axle hole;

The axle box comprises an axle shaft, an axle box body and a vertical part, wherein a movable gap is arranged between the axle shaft and the axle box body along the radial direction of the axle shaft, and the vertical part is used for limiting the axle box body to rotate.

The embodiment of the invention has the following advantages or beneficial effects:

According to the bogie wheel set for variable track provided by the embodiment of the invention, the locking taper groove is formed in the axle box girder, the axle box body is arranged in the axle box girder, and the locking taper table is arranged on the outer wall of the axle box body, which is equivalent to locking on one side, close to the axle box body, of the axle box body through the locking taper table and the locking taper groove, so that the axle box is positioned and locked in the axial direction. The axle box beam can be matched with the axle box body and the sliding mechanism to transfer acting force along the axial direction of the axle, so that the axle box beam can bear larger load and can meet the strength use requirements of high-power and high-axle-weight locomotives.

When the rail gauge of the locomotive or the vehicle is switched, the sliding mechanism can drive the wheels to move along the axial direction of the axle to unlock the wheels. At this moment, the locking frustum no longer joints in locking awl groove, and locking frustum breaks away from locking awl groove, can not realize the effort of transmission along axletree axial direction, realizes the uninstallation effect of wheel, realizes adapting to the demand that the track gauge changes under the condition of not stopping to change the bogie, reduces manpower, material resources cost that change the bogie caused when intermodal transportation, improves operating efficiency.

The axle box front cover is arranged outside the axle end of the axle, the axle box front cover plays a role in packaging the end part of the axle, the axle box front cover is connected to the axle box beam, the axle box beam plays a role in fixing the axle box front cover, and the limit flanges and the limit parts are matched in the axle box body and the axle box front cover, so that when the inner side distance of the wheel is overlarge, namely when the wheel is converted to a wide gauge, the limit flanges and the limit parts are mutually contacted to realize limit, the condition that the wheel slips or is locked due to overlarge wheel lateral movement in the gauge changing process is avoided, and the reliability and stability before and after the gauge changing are ensured.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Wherein:

FIG. 1 is a schematic illustration of a configuration for a variable gauge bogie wheel set according to an embodiment of the present invention;

FIG. 2 illustrates a partial cross-sectional view I of a wheel set for a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 3 illustrates a partial cross-sectional view II of a wheel set for a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 4 is a schematic illustration of a configuration for a centering axle for a variable gauge bogie wheel according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of a wheel set for a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 6 is a schematic illustration of a configuration of an axle housing for a wheel center of a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a configuration of a driven gear for a wheel center of a variable gauge bogie according to an embodiment of the present invention;

FIG. 8 illustrates a cross-sectional view of a wheel set for a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 9 is a schematic illustration of a structure for a center axle box beam for a variable gauge bogie wheel set according to an embodiment of the present invention;

FIG. 10 is a schematic illustration of a configuration for a wheel centering axle housing for a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 11 is a schematic view of a limit bearing for centering a bogie wheel with varying gauge according to an embodiment of the present invention;

FIG. 12 is a schematic view of a configuration of a centering shaft end gland for a variable gauge bogie wheel according to one embodiment of the present invention;

FIG. 13 is a schematic view of a front cover for a wheel centering axle box of a variable gauge bogie in accordance with an embodiment of the present invention;

FIG. 14 is a schematic view of a wheel centering end cap for a variable gauge bogie according to an embodiment of the present invention;

FIG. 15 shows a schematic structural view of a slip sleeve for a truck wheel centering in accordance with an embodiment of the present invention;

FIG. 16 shows a second schematic structural view of a slip sleeve for a truck wheel centering in accordance with an embodiment of the present invention;

FIG. 17 is a schematic illustration of a configuration for a centering spline hub for a variable gauge bogie wheel according to an embodiment of the present invention;

FIG. 18 is a schematic view showing the construction of a needle roller cage and needle roller body for use in a bogie wheel centering of variable gauge according to an embodiment of the present invention;

fig. 19 is a schematic view showing a structure of a centering and limiting seat for a bogie with variable track gauge according to an embodiment of the present invention.

FIG. 20 illustrates a schematic diagram of a configuration for a variable gauge bogie wheel centering pedestal bearing according to an embodiment of the present invention;

fig. 21 is a schematic view showing the structure of a centering shaft end gland for a bogie wheel with variable track gauge according to an embodiment of the present invention.

Wherein reference numerals are as follows:

100. Axle box assembly, 200, axles, 300, wheels, 400, driven gears, 500, axle-holding boxes;

1. the device comprises an axle box beam, 101, a locking taper groove, 102, an axle hole, 103, a vertical part, 104, a first mounting interface, 105, a second mounting interface, 106 and a third mounting interface;

2. the axle box body, the locking taper table, the limit part, the vertical limit edge and the axle box body are respectively arranged at the two ends of the axle box body;

3. the sliding mechanism, 31, a sliding sleeve, 311, a wheel mounting interface, 312, a bearing mounting interface, 313, spline grooves, 314 and a roller path;

32. 33 parts of spline hub, 34 parts of spline, 34 parts of needle roller assembly, 341 parts of needle roller retainer, 342 parts of needle roller body, 343 parts of limit seat;

4. axle box front cover, 41, limit flanges, 42, bearing mounting seat, 421, vertical flanges;

5. The device comprises a limit bearing, a shaft end gland, a shaft box bearing, a bearing gland and an end cover.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying any or all relative importance, unless otherwise expressly specified or defined, the term "plurality" refers to two or more, and the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being either permanently connected or removably connected, or capable of being electrically connected or capable of being connected in a signal-forming manner, or capable of being connected directly or indirectly via an intermediary. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

The present embodiment provides a bogie wheel set for variable track, as shown in fig. 1 to 5, which includes an axle 200, wheels 300 and an axle box assembly 100, the axle 200 is disposed through the wheels 300 and the axle box assembly 100, and the axle box assembly 100 is used for variable track of the wheels 300 along the axial direction of the axle 200, so as to realize the change of the inner track of the bogie wheel set.

It should be noted that the number of wheels 300 is two, and two wheels 300 are symmetrically disposed at both ends of the axle 200 and are disposed opposite to each other, and the wheels 300 can rotate on the rails, thereby driving the vehicle forward. The two axle box assemblies 100 are symmetrically arranged at the axle end positions at two sides of the axle 200, so that the space inside the wheel 300 is not occupied, the occupied space is saved, the structural arrangement requirement of the inner side of a powered wheel set, particularly a high-power heavy-duty locomotive wheel 300 pair is met, and the rail transfer requirement of the unpowered wheel set is met.

It should be noted that, the wheel set for the bogie with variable track gauge adopts the wheel set with synchronously rotating wheel shafts, which overcomes the problems of poor automatic centering capability, serious eccentric wear of the wheel rim, and the need of designing a guiding mechanism, etc. of the independently rotating wheel 300, thereby prolonging the service life of the wheel 300.

In one embodiment, as shown in fig. 6-7, the truck wheel set for variable track is further comprised of a driven gear 400 and a driving mechanism, the driven gear 400 being disposed over the axle 200 and between two wheels 300 disposed opposite each other. The driving mechanism comprises an axle suspension box 500 and a driving source, wherein the axle suspension box 500 is sleeved on the axle 200, the driving source is arranged on the axle suspension box 500, a driving gear is arranged at the output end of the driving source, and the driving gear is meshed with the driven gear 400.

The driving mechanism is sleeved on the axle 200, and plays a role in transmitting torque while bearing the weight of a driving source. The axle shaft 200 plays a role in fixing the axle shaft box 500 by sleeving the axle shaft box 500 on the axle shaft 200, and plays a role in fixing and supporting by arranging a driving source on the axle shaft box 500 and providing an installation interface for the driving source by the axle shaft box 500. The driving source is specifically a traction motor, a driving gear is arranged at the output end of the driving source and is meshed with the driven gear 400, the driving source drives the driving gear to rotate and drives the driven gear 400 to rotate, and the driven gear 400 is arranged on the axle 200 to transmit the output torque of the driving source and drive the wheels 300 to rotate.

It can be appreciated that the space inside the wheel 300 can be used for arranging the driven gear 400, the driving mechanism and the like, and can also be used for arranging the shaft disc braking device and the like of the unpowered wheel set, so that the space arrangement is reasonable, the space utilization rate is high, the problem of tension of the structure inside the powered wheel set is solved, and meanwhile, the requirement of track change on the basis of unchanged suspension mode of the existing locomotive motor can be realized. Because the axle box assembly 100 is arranged on the outer side of the wheel 300, the axle box assembly 100 is used as a rail changing structure, and the axle box assembly and the space on the inner side of the wheel 300 are not interfered with each other, so that rail changing requirements of different suspension modes can be met. The axle box assembly 100 is arranged outside the wheels 300, so that the requirements of the powered and unpowered wheel pairs are met, and the structural arrangement requirements of the high-power high-torque heavy-duty locomotive wheel pairs are met.

It will be appreciated that the most critical ring for track gauge change in rail locomotives or vehicles is the switching of the inboard gauge of the wheelset, and that the axlebox assembly 100 is one of the most central components for realizing wheelset inboard gauge switching for a wheelset for a track-changing bogie to ensure accurate track change. The axle box assembly 100 can solve the problem that different rail gauges of railways in different countries cause obstruction to the inter-country railway transportation, namely, the rail gauges of railways in other countries can be adapted by adjusting the inner side distance of the wheels 300.

The existing variable-track locomotive wheel set can only be suitable for motor train units or passenger locomotives with smaller axle weights and traction force, and can not meet the strength requirement because the high-power and high-axle-weight locomotives are very large in loads in all directions.

To solve this problem, as shown in fig. 8, the axle box assembly 100 provided in this embodiment includes an axle box beam 1, an axle box front cover 4, an axle box body 2, and a sliding mechanism 3, and a plurality of locking taper grooves 101 provided along the axial direction of an axle 200 are provided on the inner wall of the axle box beam 1. The pedestal front cover 4 is provided outside the shaft end of the axle 200 and is connected to the pedestal beam 1. The axle box body 2 is arranged in the axle box girder 1, the outer wall of the axle box body 2 is provided with a locking taper table 21, one of the sides of the axle box body 2 and the axle box front cover 4, which are close to each other, is provided with a limiting flange 41, the other one is provided with a limiting part 22, and the limiting flange 41 is used for limiting the limiting part 22. The sliding mechanism 3 is respectively arranged on the axle box body 2 and the wheels 300 in a penetrating way. The sliding mechanism 3 is configured to drive the wheel 300 and the axle box 2 to move along the axial direction of the axle 200, so that the locking taper platform 21 is selectively clamped in one of the locking taper grooves 101, so as to switch between an unlocking mode and a locking mode, and the locking taper platform is used for changing the track gauge of the wheel 300.

The wheel set for the variable track bogie provided by the embodiment is provided with the locking taper groove 101 in the axle box beam 1, the axle box body 2 is arranged in the axle box beam 1, the locking taper table 21 is arranged on the outer wall of the axle box body 2, and the axle box body is locked on one side, close to the axle box body 2, of the axle box beam through the locking taper table 21 and the locking taper groove 101, so that the axle box 200 is positioned and locked in the axial direction. Because the axle box beam 1 can be matched with the axle box body 2 and the sliding mechanism 3 to transfer acting force along the axial direction of the axle 200, the axle box beam can bear larger load, and can meet the strength use requirements of high-power and high-axle-weight locomotives.

When the locomotive or the vehicle runs, the locking taper table 21 is clamped in the locking taper groove 101 and used for transmitting acting force along the axial direction of the axle 200 so as to ensure the bearing effect of the wheel 300, and when the track gauge of the locomotive or the vehicle is switched, the sliding mechanism 3 can drive the wheel 300 to move along the axial direction of the axle 200 so as to unlock the wheel 300. At this time, the locking frustum 21 is no longer clamped in the locking taper groove 101, the locking frustum 21 is separated from the locking taper groove 101, the acting force along the axial direction of the axle 200 cannot be transmitted, the unloading effect of the wheel 300 is achieved, the requirement of track gauge change is met under the condition that the bogie is replaced without stopping, the labor and material costs caused by replacing the bogie during international intermodal transportation are reduced, and the operation efficiency is improved.

It will be appreciated that the number of locking taper grooves 101 matches and adapts to the number of gauges. Specifically, if the number of gauges is two, the number of locking taper grooves 101 is also two. The two gauges may be referred to as a wide gauge and a narrow gauge, respectively, and when the wide gauge is used, the locking taper 21 is engaged with the locking taper groove 101 located on the outer side, and when the narrow gauge is used, the locking taper 21 is engaged with the locking taper groove 101 located on the inner side.

Because in the current track gauge mechanism, generally set up complicated unblock or locking device, when passing through ground track-changing device, with the unblock on the ground track-changing device with lock the track and cooperate and just can accomplish unblock and locking, the structure is complicated, the track-changing flow is loaded down with trivial details, the reliability is poor, often appears unable locking and the circumstances of unblock, the requirement on ground track-changing device is higher, has become the restriction factor that hinders the development of track gauge train.

Therefore, the axle box assembly 100 provided in this embodiment simplifies the track changing process into three processes of unloading and unlocking the wheel 300, track gauge switching and loading and locking the wheel 300, which is equivalent to synchronous execution and synchronous completion of the process of unloading the wheel 300 and unlocking the wheel 300, synchronous execution and synchronous completion of the process of loading the wheel 300, and the whole track changing process does not need to arrange an unlocking track and a locking track of the ground axle box assembly 100, and complicated unlocking and locking procedures in the track changing process are cancelled, so that the track changing process is simplified, and the design and manufacturing cost of the ground axle box assembly 100 are saved.

The problem of the wheel 300 slipping or locking difficulty may occur due to the excessive amount of lateral movement of the wheel 300 during the gauge change. To solve this problem, as shown in fig. 8, the axle box assembly 100 provided in this embodiment further includes an axle box front cover 4, the axle box front cover 4 is disposed outside the axle end of the axle 200 and is connected to the axle box beam 1, one of the sides of the axle box body 2 and the axle box front cover 4, which are close to each other, is provided with a limit rib 41, the other is provided with a limit portion 22, and the limit rib 41 is used for limiting the limit portion 22.

The axle box front cover 4 is arranged outside the axle end of the axle 200, the axle box front cover 4 plays a role in packaging the end part of the axle 200, the axle box front cover 4 is connected to the axle box beam 1, the axle box beam 1 plays a role in fixing the axle box front cover 4, and the limit flanges 41 and the limit parts 22 are matched with each other through the axle box body 2 and the axle box front cover 4, so that when the inner side distance of the wheel 300 is overlarge, namely when the wheel 300 is converted to a wide gauge, the limit flanges 41 and the limit parts 22 are contacted with each other to realize limit, the condition that the wheel 300 is slipped or locked due to overlarge transverse movement of the wheel 300 in the gauge changing process is avoided, and the reliability and stability before and after the gauge changing are ensured.

The side of the axle box front cover 4 close to the axle box body 2 is provided with a limit flange 41, and the side of the axle box body 2 close to the axle box front cover 4 is provided with an end cover bolt, namely, a limit part 22. The setting positions and the specific structures of the limiting flange 41 and the limiting portion 22 may be adjusted according to actual production conditions, so long as limiting along the axial direction of the axle 200 can be achieved within the protection scope of the present embodiment.

In one embodiment, as shown in fig. 8 and 9, the axlebox beam 1 is one of the primary load bearing members for a variable gauge bogie wheel set, primarily taking locomotive load and transmitting lateral forces. The inner ring of the axle box girder 1 is provided with a locking taper groove 101, and the locking taper groove 101 is clamped with a locking taper table 21 of the axle box body 2, so that locking and fixing between the axle box girder 1 and the axle box body 2 are realized.

The locking taper groove 101 and the locking taper table 21 are of taper structures, and under the cooperation of the locking taper groove 101 and the locking taper table 21, the axial direction positioning effect between the axle box girder 1 and the axle box body 2 along the axle 200 is achieved, and axial acting force is transmitted in the running process of a locomotive or a vehicle.

It should be noted that a first mounting interface 104 and a second mounting interface 105 are provided on the outside of the pedestal beam 1, the first mounting interface 104 being used for mounting a primary suspension device, and the second mounting interface 105 being used for mounting a pedestal beam. The first mounting interface 104 may be adjusted according to the parameters and application requirements of the whole locomotive or the vehicle, and may be provided with a double-sided spring seat, or may be provided with a spring seat at the top of the axle box beam 1 to form a pivoted axle box. The third mounting interface 106 may also be provided outside the axle box beam 1, where the third mounting interface 106 is used to mount a series of vertical vibration absorbers, and the series of vertical vibration absorbers may also be disposed on the axle box front cover 4, so that the structure adjustment is flexible and various, and various axle box types in the market at present may be replaced.

In one embodiment, as shown in fig. 8 and 9, the axle box girder 1 is provided with an axle hole 102, and a locking taper groove 101 is provided at an inner wall of the axle hole 102. Wherein, along the radial direction of the axle 200, a clearance is provided between the axle hole 102 and the axle housing 2.

By providing axle housing beam 1 with axle bore 102, axle bore 102 is configured to receive axle housing 2 to provide an installation location for axle housing 2. A clearance gap is provided between the shaft hole 102 and the axle housing 2 in a radial direction of the axle 200 to provide a movable clearance space for the axle housing 2. Specifically, when the axle housing 2 moves along the radial direction of the axle 200 and in a direction away from the locking taper groove 101, the locking taper table 21 and the locking taper groove 101 are separated from each other to realize the unloading process of the wheel 300, and when the axle housing 2 moves along the radial direction of the axle 200 and in a direction close to the locking taper groove 101, the locking taper table 21 and the locking taper groove 101 are clamped with each other to realize the loading process of the wheel 300.

In one embodiment, as shown in fig. 8 and 8, the shaft hole 102 is provided with a vertical portion 103, and the vertical portion 103 is used to restrict rotation of the axle housing 2.

The shaft hole 102 is provided with a vertical portion 103, and the shaft hole 102 is not a circular hole structure, and the shaft hole 102 is similar to a oblong hole or a kidney-shaped hole structure. The vertical portion 103 may also be referred to as a vertical gear edge or a force transmission limit stop edge, and mainly has the following effects that firstly, the vertical portion 103 plays a role in limiting to avoid relative rotation between the axle box girder 1 and the axle box body 2, secondly, after the wheel 300 is unlocked, the axle box body 2 is ensured not to rotate, so that the locking taper table 21 and the corresponding locking taper groove 101 cannot cause failure of the axle box assembly 100 due to phase change, and the reliability of the axle box assembly 100 is ensured, and thirdly, the vertical portion 103 is utilized to transmit acting force along the radial direction of the axle 200 in the running process of a locomotive or a vehicle.

In one embodiment, as shown in fig. 8 and 10, the axle box 2 is a main bearing component for the bogie wheel set with variable track gauge, and is mainly used for bearing locomotive load and carrying out key parts for transverse force transmission, a locking taper table 21 is arranged at the upper part of the outer part of the axle box 2, and the locking taper table 21 and a locking taper groove 101 of the axle box beam 1 are matched with each other to transmit acting force along the axial direction of the axle 200. On the outside of the axle housing 2 there is a abutment cooperating with the vertical portion 103 of the axle housing beam 1 for transmitting forces in the radial direction of the axle 200.

It should be noted that, the outer wall of the axle box body 2 is further provided with a vertical limit edge 23, and the vertical limit edge 23 is matched with the vertical part 103 at the inner side of the axle box girder 1 to prevent the failure of the track changing process, so as to ensure the reliability of the track changing process.

In one embodiment, as shown in fig. 8 and 11-12, the bogie wheel set for variable track gauge further comprises a limit bearing 5 and a shaft end gland 6, wherein the limit bearing 5 is sleeved outside the shaft end of the axle 200 and is arranged between the axle 200 and the axle box front cover 4, the shaft end gland 6 is arranged at the end part of the axle 200, and the shaft end gland 6 and the axle box front cover 4 are respectively abutted against two ends of the limit bearing 5 along the axial direction of the axle 200.

The limiting bearings 5 are specifically tapered roller bearings, and the number of the limiting bearings 5 is two, that is, two tapered roller bearings are installed at the shaft end of the axle 200. Through setting up spacing bearing 5 and setting up between axletree 200 and axle box protecgulum 4, axle box protecgulum 4 plays the effect of installation spacing bearing 5, through axle head gland 6 and axle box protecgulum 4 butt respectively in spacing bearing 5 along the both ends of axletree 200 axial direction. Under the compression action of the shaft end gland 6 and the axle box front cover 4, the limit of the limit bearing 5 is realized, so that the acting force of one axle box assembly 100 along the axial direction of the axle 200 is transmitted to the other axle box assembly 100 through the axle 200, and the inner side distance of the wheel set of the locomotive is kept unchanged in the running process. The mechanical structure is utilized to ensure the accuracy of the track change position, thereby realizing the accuracy and reliability of the track change process.

It should be noted that the shaft end gland 6 and the axle 200 may be connected by bolts, that is, bolts may be respectively inserted through the shaft end gland 6 and the axle 200.

In one embodiment, as shown in fig. 8 and 13, a bearing mount 42 is provided in the axle box front cover 4, the bearing mount 42 is of a oblong hole structure, the bearing mount 42 is used for mounting a limit bearing 5, and the limit bearing 5 is configured to move in a radial direction of the axle 200 in the bearing mount 42.

The bearing mounting seat 42 is arranged in the axle box front cover 4, and the bearing mounting seat 42 plays a role in mounting the limiting bearing 5. Because the locking frustum 21 and the locking taper groove 101 need to drive the limiting bearing 5 to move in the unlocking and locking processes, the bearing mounting seat 42 is of a slotted hole structure, and the slotted hole structure provides a movable space along the radial direction of the axle 200 for the limiting bearing 5.

In one embodiment, the inner wall of the bearing mounting seat 42 is provided with a vertical flange 421, and the vertical flange 421 is abutted against the outer ring of the limit bearing 5, for limiting the limit bearing 5. When the limit bearing 5 moves up and down along the radial direction of the axle 200, the vertical flange 421 on the inner wall of the bearing mounting seat 42 is always in contact with the outer ring of the limit bearing 5, so as to play roles of limiting and stopping.

In one embodiment, as shown in fig. 8 and 14, the bogie wheel set for variable track gauge further comprises an end cover 10, wherein the end cover 10 covers the outside of the end of the axle 200 and is connected to the axle box front cover 4 for protection. Wherein the end cap 10 and the axlebox front cover 4 may be connected by bolts.

It should be noted that a first end cap mounting interface is provided on the end face of the end cap 10 for mounting a grounding device or an axial end speed sensor.

In one embodiment, as shown in fig. 8 and 15-17, the sliding mechanism 3 includes a sliding sleeve 31, a spline hub 32 and a spline 33, the sliding sleeve 31 is respectively inserted into the axle box 2 and the wheel 300, the spline hub 32 is disposed in the sliding sleeve 31, the spline hub 32 is sleeved outside the axle 200 and connected with the axle box, and the spline 33 is disposed on the spline hub 32 and between the spline hub 32 and the sliding sleeve 31.

The sliding sleeve 31 is a main sliding and torque transmission mechanism, and the sliding sleeve 31 is arranged through the sliding sleeve 31 in a penetrating manner on the wheel 300, so that the sliding sleeve 31 can drive the wheel 300 to move along the axial direction of the axle 200, and the track-changing process of the wheel 300 is realized. Specifically, a wheel mounting interface 311 is arranged on the outer portion of the sliding sleeve 31, the wheel mounting interface 311 is used for mounting a wheel 300, the spline hub 32 is sleeved on the outer portion of the axle 200 and is arranged in the sliding sleeve 31, the spline hub 32 plays a role of bearing a spline 33, the spline hub 32 is in interference fit with the axle 200 so as to ensure the fixing effect between the spline hub 32 and the axle 200, a spline groove 313 is formed in the spline hub 32, the spline groove 313 is used for accommodating a spline 33, the spline 33 is arranged between the spline hub 32 and the sliding sleeve 31 through the spline 33, and the spline 33 plays a role of transmitting torque in the normal working process and simultaneously ensures the smoothness of sliding in the track change process.

It should be specifically noted that, the spline hub 32 needs to be subjected to special process treatment, so that the spline hub 32 meets the strength requirement, at this time, the axle 200 does not need to be specially reinforced, the processing technology is exactly the same as that of the existing locomotive axle 200, the spline hub 32 can be replaced in time according to the use condition, the replacement cost is low, the axle 200 does not need to be replaced, and the axle 200 can be used in a full life cycle.

The spline 33 may be replaced by various spline forms such as an involute spline and a rectangular spline, may be integrally formed with the slipping sleeve 31 as needed, may be engaged with the spline hub 32 to transmit torque, or may be integrally formed with the spline hub 32 to be engaged with the slipping sleeve 31 to transmit torque.

In one embodiment, the end face of spline hub 32 is used for limit of slip sleeve 31, or the end face of spline 33 is used for limit of slip sleeve 31.

It should be noted that, when the inner side distance of the wheel 300 is excessively reduced, the slip sleeve 31 is brought into contact with the end face of the spline hub 32 to achieve the stopper function, or the slip sleeve 31 is brought into contact with the end face of the spline 33 to achieve the stopper function. By adopting the mechanical limiting mode, the condition that the track gauge variation of the wheel 300 is small in the track gauge changing process is avoided, and the track changing process is more accurate and reliable.

In one embodiment, as shown in fig. 8 and 18, the slip mechanism 3 further includes a needle assembly 34, the needle assembly 34 including a needle cage 341 and a needle body 342, the needle cage 341 being disposed between the axle 200 and the slip sleeve 31. The needle roller body 342 is provided on the needle roller holder 341 and is provided between the needle roller holder 341 and the slipping sleeve 31.

It will be appreciated that the needle roller cage 341 and needle roller body 342 are the primary components between the wheel 300 and axle 200 that are subject to loads in the radial direction of the axle 200, such as the mass of the respective suspension system, the vertical impact force of the wheel rail, etc. The needle retainer 341 provides a bearing position for the needle body 342 by being disposed between the axle 200 and the slipping sleeve 31, and accordingly, the raceway 314 is disposed inside the slipping sleeve 31 to provide a receiving space for the needle body 342. Under the interaction of the needle roller retainer 341 and the needle roller body 342, the needle roller retainer 341 can move along the axial direction of the axle 200 along with the wheel 300 during track gauge switching, so that the center of the needle roller retainer 341 is always overlapped with a rolling circle of the tread of the wheel 300, the whole needle roller assembly 34 is free from unbalanced load, no clamping stagnation exists when the wheel 300 slides, and smoothness of the sliding mechanism 3 in the track changing process is further ensured.

It should be noted that, the needle roller assembly 34 bears the load along the radial direction of the axle 200, and compared with the sliding bearing, the bearing capacity is strong, the occupied space is small, the risk of the wheel 300 jamming in the track changing process is reduced, and the track changing reliability is improved, but according to the technical scheme, in some other embodiments, the needle roller assembly 34 can be replaced by the sliding bearing.

It should be specifically noted that in some other embodiments, needle assemblies 34 may be replaced with needle bearings or slide bearings.

In one embodiment, as shown in fig. 8 and 19, the needle roller assembly 34 further includes a limiting seat 343, the limiting seat 343 is sleeved outside the axle 200 and is disposed between the axle 200 and the needle roller retainer 341, the limiting seat 343 is mainly used for bearing the load transferred by the needle roller assembly 34 along the radial direction of the axle 200, one side end surface of the limiting seat 343 can play a limiting role in gauge change, and the other side end surface can be used for limiting the sealing ring of the axle suspension 500 of the locomotive.

In one embodiment, as shown in fig. 8 and 20, the bogie wheel set for variable track gauge further comprises an axle box bearing 7, wherein a mounting hole is formed in the axle box body 2, the axle box bearing 7 is arranged in the mounting hole, the mounting hole provides a mounting position for the axle box bearing 7, the axle box bearing 7 is sleeved outside the sliding sleeve 31 and is arranged between the sliding sleeve 31 and the axle box body 2, and the axle box bearing 7 ensures smoothness of rotation of the axle 200 in the normal working process of the locomotive.

It should be noted that, the pedestal bearing 7 may be a totally enclosed tapered roller bearing without maintenance, a double row cylindrical roller bearing, or other bearings with the same bearing function.

It should be noted that, a bearing mounting interface 312 is provided on the outside of the sliding sleeve 31, the bearing mounting interface 312 is used for mounting the axle box bearing 7, and the axle box bearing 7 is press-fitted on the bearing mounting interface 312 of the sliding sleeve 31 in an interference manner, so as to transmit the acting force along the axial direction of the axle 200 and the acting force along the radial direction of the axle 200, thereby ensuring that the axle box body 2 does not rotate along with the rotation of the axle 200.

The axle box assembly 100 is characterized in that the position of the axle box bearing 7 is fixed when the track gauge is changed, the center line of the axle box bearing 7 always coincides with the bearing centers of the axle box body 2 and the axle box girder 1, no unbalanced load is generated under various track gauges, and the service life and the reliability of the axle box bearing 7 are ensured. In addition, the axle box bearing 7 is easy to select, the axle box bearing 7 of the existing locomotive or vehicle can be selected, the development is not needed, the materials are obtained locally, and the production cost is saved.

In one embodiment, as shown in fig. 8 and 21, the track gauge bogie wheel set further comprises a bearing cover 8, the bearing cover 8 is disposed at one end of the sliding sleeve 31 near the axle box front cover 4, and the bearing cover 8 can be abutted to the axle box bearing 7 for limiting the axle box bearing 7. The bearing cover 8 is utilized to realize the press fitting and limiting functions on the end part of the axle box bearing 7, and meanwhile, the axle box bearing 7 is ensured to move along with the movement of the sliding sleeve 31.

In one embodiment, the bogie wheel set for variable track gauge further comprises a bearing shoe, wherein the bearing shoe is arranged at the lower part of the axle box girder 1, and is fastened together with the axle box girder 1 through a bolt connection, and the bearing shoe mainly plays a role in bearing the load along the radial direction of the axle 200 when the locomotive or the vehicle is variable track gauge.

It should be noted that the carrying shoe may be structurally adjusted and replaced according to the interface requirements of the ground track-change device.

The working process for the variable-track bogie wheel set provided by the embodiment is as follows:

1. After the locomotive or the vehicle enters the unloading area of the ground track-changing device, the bearing shoes arranged at the lower part of the axle box girder 1 are contacted with the bearing rails of the ground track-changing device, the wheels 300 gradually sink along the sinking rails of the ground track-changing device, and all the components except the axle box girder 1 for the track-changing bogie wheel set sink along with the wheels 300. At this time, the locking taper groove 101 of the axle box beam 1 is gradually disengaged from the locking taper land 21 of the axle box body 2 until the axle box body 2 is in contact with the lower half circular arc of the inner ring of the axle box beam 1, that is, the unloading is completed, and at this time, the bearing shoes at the lower part of the axle box beam 1 bear all the load on the vehicle, the vehicle wheels 300 are completely unloaded, and the locking taper groove 101 of the axle box beam 1 is completely disengaged from the locking taper land 21 of the axle box body 2, that is, the vehicle wheels 300 are completely unlocked while the vehicle wheels 300 are unloaded.

2. When the locomotive or the vehicle reaches a track change area, the wheels 300 transversely move to a fixed track gauge under the action of the guide rail, the slipping sleeve 31 drives the axle box bearing 7, the axle box body 2 and the wheels 300 to synchronously move, and the locking taper table 21 of the axle box body 2 moves to a locking taper groove 101 corresponding to the track gauge in the axle box beam 1;

in order to prevent the wheel 300 from slipping or being difficult to lock due to excessive lateral displacement of the wheel 300 in the track gauge changing process, the invention has a mechanical limiting function, namely, when the inner side distance of the wheel 300 is excessively increased, the limiting part 22 of the axle box body 2 is in contact with the limiting flange 41 of the axle box front cover 4 to realize limiting, and when the inner side distance of the wheel 300 is excessively reduced, the end face of the spline hub 32 is in contact with the sliding sleeve 31, or the end face of the spline 33 is in contact with the sliding sleeve 31 to realize limiting.

3. When the locomotive or the vehicle reaches the loading area, the tread of the wheel 300 starts to ascend along the ascending rail of the ground rail transfer device, and when the locomotive is inert until the bearing shoes are separated from the bearing rail, the wheel 300 ascends and bears gradually until the locking taper platform 21 of the axle box body 2 is completely embedded into the locking taper groove 101 corresponding to the track gauge in the axle box girder 1, and the locking of the wheel 300 is synchronously completed when the bearing of the wheel 300 is completed.

It should be noted herein that the wheel set for a variable gauge bogie shown in the drawings and described in this specification is merely one example employing the principles of the present invention. It will be clearly understood by those of ordinary skill in the art that the principles of the present invention are not limited to any details or any components of the devices shown in the drawings or described in the specification.

It should be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the specification. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are intended to fall within the scope of the present invention. It should be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to make and use the invention.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A wheel set for a variable gauge bogie, comprising an axle (200), a wheel (300) and an axle box assembly (100), wherein the axle (200) is inserted through the wheel (300) and the axle box assembly (100), and wherein the axle box assembly (100) comprises:

An axle box beam (1), wherein the inner wall of the axle box beam (1) is provided with a plurality of locking cone grooves (101) arranged along the axial direction of the axle (200);

An axle box front cover (4) is arranged outside the shaft end of the axle (200) and connected to the axle box beam (1);

An axle box body (2) is arranged in the axle box beam (1), the outer wall of the axle box body (2) is provided with a locking cone (21), one of the sides of the axle box body (2) and the axle box front cover (4) close to each other is provided with a limiting rib (41), and the other is provided with a limiting portion (22), the limiting rib (41) is used for limiting the position of the limiting portion (22);

A sliding mechanism (3) is respectively disposed through the axle box (2) and the wheel (300);

A limit bearing (5) is sleeved on the outside of the shaft end of the axle (200) and is arranged between the axle (200) and the axle box front cover (4);

The sliding mechanism (3) is configured to drive the wheel (300) and the axle box (2) to move along the axial direction of the axle (200), so that the locking cone (21) is selectively engaged with one of the locking cone grooves (101) to achieve switching between an unlocking mode and a locking mode, which is used for the wheel (300) to change the track gauge;

A bearing mounting seat (42) is arranged inside the axle box front cover (4), and a vertical rib (421) is arranged on the inner wall of the bearing mounting seat (42), and the vertical rib (421) abuts against the outer ring of the limit bearing (5) to limit the position of the limit bearing (5);

The sliding mechanism (3) comprises:

A sliding sleeve (31) is respectively inserted into the axle box (2) and the wheel (300);

A spline hub (32) is disposed in the sliding sleeve (31), and the spline hub (32) is sleeved on the outside of the axle (200) and connected thereto;

A spline (33) is arranged on the spline hub (32) and between the spline hub (32) and the sliding sleeve (31);

The end surface of the spline hub (32) is used to limit the position of the sliding sleeve (31); or,

The end surface of the spline (33) is used to limit the position of the sliding sleeve (31).

2. The variable gauge bogie wheelset according to claim 1, further comprising:

The shaft end pressure cover (6) is arranged at the end of the axle (200), and the shaft end pressure cover (6) and the axle box front cover (4) are respectively abutted against the two ends of the limit bearing (5) along the axial direction of the axle (200).

3. The variable gauge bogie wheelset according to claim 2 is characterized in that the bearing mounting seat (42) is an oblong hole structure, the bearing mounting seat (42) is used to mount the limit bearing (5), and the limit bearing (5) is configured to move in the radial direction of the axle (200) within the bearing mounting seat (42).

4. The wheelset for a variable gauge bogie according to claim 1, further comprising:

An axle box bearing (7) is sleeved on the outside of the sliding sleeve (31) and is arranged between the sliding sleeve (31) and the axle box body (2);

A bearing pressure cover (8) is arranged at one end of the sliding sleeve (31) close to the axle box front cover (4); the bearing pressure cover (8) can abut against the axle box bearing (7) and is used for limiting the position of the axle box bearing (7).

5. The wheel set for a variable gauge bogie according to claim 4, characterized in that the sliding mechanism (3) comprises a needle roller assembly (34), and the needle roller assembly (34) comprises:

A needle roller retainer (341) is arranged between the axle (200) and the sliding sleeve (31);

A needle roller body (342) is arranged on the needle roller retainer (341) and between the needle roller retainer (341) and the sliding sleeve (31);

A limiting seat (343) is sleeved on the outside of the axle (200) and is arranged between the axle (200) and the needle roller retainer (341).

6. The wheelset for a variable gauge bogie according to claim 1, further comprising:

A driven gear (400) is sleeved on the axle (200) and is located between two wheels (300) that are arranged opposite to each other;

The driving mechanism comprises an axle-holding box (500) and a driving source, wherein the axle-holding box (500) is sleeved on the axle (200), the driving source is arranged on the axle-holding box (500), and a driving gear is arranged at the output end of the driving source, and the driving gear is meshed with the driven gear (400).

7. The wheelset for a variable gauge bogie according to any one of claims 1 to 6, characterized in that the axle box beam (1) is provided with an axial hole (102), and the locking cone groove (101) is provided on the inner wall of the axial hole (102);

Wherein, along the radial direction of the axle (200), a movable gap is provided between the shaft hole (102) and the shaft box body (2), and the shaft hole (102) is provided with a vertical portion (103), and the vertical portion (103) is used to limit the rotation of the shaft box body (2).